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Bibliography: coal resources, San Juan river region, Colorado
Bibliography, coal resources, San Juan river region, Colorado (Online)
Coal resources, San Juan River region, Colorado
Colorado Geological Survey.
Geological Survey (U.S.)
Colorado Geological Survey
by Peter Rushworth.
"This report was prepared with the support of the U.S. Geological Survey, Agreement Number 14-08-0001-A0108."
Print version record.
Coal mines and mining
1 online resource (iii, 17 pages).
Open file report (Colorado Geological Survey)